【摘要】 为了评价不同完井方式下筛管的防砂效果,根据虑砂筛管的防砂条件,研制了三维径向流筛管评价实验装置。该装置由主体装置、流体输送系统、储液箱、测量系统、沉砂过滤系统、循环管路及采集控制系统等组成,利用流体输送系统将预先充填好的地层砂携带到防砂筛管的外层,一部分进入防砂筛管的内部并随流体进入沉砂过滤系统,最后沉降在沉砂收集罐内,另一部分堆积在防砂筛管的外壁,通过分析防砂筛管的压降及沉砂收集罐内地层砂的粒度分布,实现对防砂筛管的防砂性能的评价。该装置能模拟射孔、裸眼、滤砂管防砂、砾石充填防砂等各种组合情况,评价不同尺寸砾石层、不同防砂筛管的流通性能、挡砂性能、抗堵塞性能。更多还原

【Abstract】 To evaluate the effect of sand prevention in different well completion, a sieve tube evaluation unit about three-dimensional radial flow has been developed according to the sand control conditions of sieve tube. It includes main unit, transporting flow system, liquid storage tank,measuring system,sediment filter system, circulating line,collection and control system, etc. The sands were carried to outer sphere of sieve tube by flow transporting system, and one of them went into the sieve tube and entered the sediment filter system, settled in the collecting tank by subside in the end, and the other settled on the outer casing of sieve tube. After pressure drop of sieve tube and distribution of powders of formation sands in the sediment tank being analyzed, the effect evaluation would be gained. The units could simulate different mode among perforation, naked well, screen sand control,gravel pack of sand control, and so on, evaluate liquidity, the blocking sand performance, anti jamming performance of different size gravel layer,sorts of sieve tubes.更多还原